Xerox DocuColor 12 Printer with Fiery X12 产品宣传页

When using the PostScript printer driver, copiers such as the Fiery must receive 
PostScript instructions to print an image or a document. Many applications do not 
create these PostScript instructions by themselves, and instead rely on the printer 
driver to create them. Included in this category are most word processors, spreadsheets, 
and presentation packages. These applications use Windows Graphics Device 
Interface (GDI) to display and print when running under Windows and Apple 
QuickDraw to display and print when running on Mac OS computers. We refer to 
these GDI and QuickDraw applications as “office applications.”

All office applications handle color similarly, using the same RGB color model used for 
the color monitor display. Most office applications allow you to choose colors from a 
palette of preselected colors; some allow you to add new colors to the palette using a 
color picker. Although some applications allow you to specify color using the CMY, 
HSL, and HSV color models, these applications always send RGB color data to the 
Fiery. (An exception to this is a CMYK EPS file placed in the document, which is sent 
as CMYK data.)

When working with color in office applications, keep in mind that:

• The range of colors that can be displayed in RGB on your monitor is much larger 

than the range of colors that can be printed on your copier. When you print the 
document, out-of-gamut RGB colors are mapped to colors your copier can produce.

• These applications send only RGB data to the Fiery. You control the rendering style 

of the color conversion with your selection of a CRD.

Each CRD uses a different color rendering style, and therefore has a different way of 
mapping unprintable colors to the color gamut of your copier. Fiery color rendering 
styles are described on page 1-5.